Multiple tile mold



Mar. 20, 1923; 1,448,884.

L J. WALKER. 1 MULTIPLE TILE MOLD.

FILED AUG.'|9,1922.

2 SHEETS-SHEET I Mar. 20, 1923.

J. WALKER. MULTIPLE TILE MOLD.

2 SHEETSSHEET 2;.

FILED AUG. 19, I922.

Patented Mar. 2@, i923.

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JOHN WALKER, OF HONOLULU, HAWAII.

MULTIPLE TILE MOLD.

Application filed August 19, 1922. Serial No 583,018.

To all whom it may concern: Be it known that 1, JO N WALKER, a c1t1- zen of the United States, residing at the city of Honolulu, Territory of Hawaii, have invented certain new and useful lmprove ments in Multiple Tile Molds and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The invention relates to multiple molds for the casting of hollow concrete tiles for walls, partitions and the like, by the wet process, and has for its object to provide a simple, practical andinexpensive mold that may be set up, preparatory to the cast ng operation, with a minimum of labor, and which may be knocked down'or disassembled with equal facility after the tiles have set, so as to leave the individual tiles entirely free for removal, the mold being asso ciated with a special form of pouring guide and tamping device, and also with a simple and efficient form of core lifter, all of the parts being so constructed and arrangedas to permit their assemblage and application by ordinary unskilled labor, but which will nevertheless be capable. of turning out hlghly finished, waterproof concrete tiles in a relatively short space of time, and at a minimum expense of operation.

The invention is illustrated in the accompanying drawings, in which,

Fig. 1 is a perspective view of the mold showing the various elements, thereof in assembled relation;

Fig. 2 is a fragmentary perspective view of the bed frame;

Fig. 3 is a similar View of a series of pallette boards;

Fig. 4: is a perspective view of a removable core;

Fig. 5 is a perspective view of the core lifter;

Fig. '6 is a similar vie-w of the pourlng guide and tamping device;

Fig. 7 is a perspective of a finished tile.

Referring to the drawings, 1, indicates a series of transverse stringers or beams which are notched or recessed along their upper edges to receive a series of longitudinal planks 2, 2, in properly spaced parallel relation, the positions of the planks being determined by the shoulders 3 terminating the notched portions of the stringers 1. Formed in the adjacent faces of the stringers 1 and the planks 2 are sockets 7, the purpose of which will be explained later.

The 'bed frame as thus constituted is adapted to receive a series of individual pallette boards 5, each of which is suitably reinforced on its lower face by cross-battens 6, the pallette boards being disposedin parallel series also in parallel rows on the bed frame, each pallette board constituting the bottom of a mold section for an individual tile.

Supported by the longitudinal planks 2, are removable end plates 10, each of which constitutes an end closure for a series of molds, and each of said plates 10 has secured to its inner face a series of cores 11, which define the ends of the tiles, the said cores being spaced apart to provide vertical channels or grooves 12 between each pair of cores, which grooves or channels receive the ends of individual face plates 13 which define the front and rear faces of the tiles, the lower edges of the face plates engaging the upper surfaces of the subjacent pallette boards.

'Each of the end plates 10 is provided with spaced series of stay-rods 14 secured to the outer faces of said plates, which stay-rods engage the sockets 7 formed in the bed frame,the reby interlocking the end frames and associated face plates and pallette boards with the bed frame.

In order to firmly clamp the assembled multiple mold sections in properly adjusted position, and at the same time to admit of the various sections being quickly knocked down or disassembled, there is mounted on clamping relation with the transverse face plates 13 and the pallette boards 5, as illustrated mere particularly in Fig. I.

The cores whieh define the openings in the hollow tiles are preferably formed of two tapering block-like elements 20, rigidly connected by vertical tongues 21 with a top bar 22, which latter not only keeps the core sections properly spaced, but admits of said sections beingreadily applied to and removed from the individual mold sections.

Fig. 6 illustrates a simple andeffective device for directing the semi-fluid cement or concrete mixture into the individual molds, and also for tamping the mixture in the mold to fill the voids and force the finer material toward the faces of the tile, thereby producing a smooth and even finish of the faces, which not only improves the appearance of the finished tile, but renders the latter substantially water-proof. The device aforesaid comprises a generally rectangular metal frame 25 open at the top. and bottom, having a flaring upper rim 26, and a lower marginal flange 27. In application, this device is placed in each mold section between the core and the walls of the mold, as shown in Fig. 1, and the wet concrete is delivered into the pouring guide. The latter is moved up and down within the mold section during this pouring operation, thereby distributing and tamping the concrete in the mold and forcing the finer elements of the concrete mixture toward the walls of the mold section, and therefore toward the faces of the finished tile.

When the multiple mold is assembled, as illustrated in Fig. l, a core section, as indicated in Fig. 4 is placed in eachmold section and each of the latter is filled in succession by means of the pouring guide, and when all the mold sections have been filled, the apparatus is allowed to stand for just suiiicient time to permit the cast tile to harden sufficiently to be self-supporting, after which the cores are first withdrawn by means of the device shown in Fig. 5, comprising a generally rectangular frame 30 carrying spaced bearing blocks 31 having transverse grooves in their top edges to receive a shaft 32 upon which is pivoted a lever 33 carrying on its load end a pivoted hook 34, which is adapted to be engaged under the bar 22 of the core device, so that when said lever 33 is depressed, the core is lifted from the mold, themode of applying and operating the core lifter being illustrated in Fig. 1. After the cores have been removed, the leaves 16 of the brace hinges are swung downward, thereby releasing the clamping pressure on the end plates and permitting the latter to be lifted out ofengagement with the bed frame. The face plates 13 lying on either side of the finished tiles are then lifted out of position, leaving each tile resting on its individual pallette board, and entirely free to be removed with the pallette boards to the curing sheds, leaving the remainder of the apparatus to be reassembled with a new set of pallette boards for a further tile casting operation.

the durability of the several sections, but

will impart a smooth finish to the portions of the tile coming into contact therewith.

Vfhat I claim is: 1. A multiple mold for hollow concrete tile comprising a bed frame, individual pallette boards supported thereby, removable end plates having spaced end core sections secured thereto, removable face plates having their ends engaging slots formed by adjacent vertical edges of the end core sections, removable cores for each mold section, and laterally swinging brace hinges mounted on the bed frame and engaging the end plates to clamp the several plates in assembled relation.

2. A multiple mold for hollow concrete tile comprising a bed frame having spaced sockets therein, individual pallette boards supported thereby, removable end plates having spaced end core sections secured thereto on one side and vertical stay-rods secured to the opposite side and co-operating with said sockets, removable face plates hav ing their ends engaging slots formed by adjacent vertical edges of the end core'sections, removable cores for each mold section, and laterally swinging brace hinges mounted on the bed frame and engaging the end plates to clamp the several plates in assembled relation.

3. A multiple mold for hollow concrete tile comprising a bed frame, individual pallette boards supported thereby, removable end plates having spaced end core sections secured thereto, removable face plates having their ends engaging slots formed by adja cent vertical edges of the end core sections, removable cores for each mold section, friction springs on the outer faces of said end plates, and laterally swinging brace hinges mounted on the bed frame and engaging said friction springs to clamp the several plates in assembled relation.

4:. A multiple mold for hollow concrete tile comprising a bed frame including transverse stringers and spaced longitudinal planks laid thereon, said membershaving sockets formed in their abutting edges,

individual pallette boards supported on said planks, removable end plates having spaced end core sections secured thereto, vertical stay-rods on said end plates engaging said sockets, removable face plates hav ing their ends engaging slots formed by jacent vertical edges of the end core sections, removable cores for each mold tion, and laterally swinging brace hinges mounted on the bed frame and engaging the end plates to'clanip the several plates in assembled relation.

A mold for hollow tiles comprising a eral members together, a removable core for 10 knock-clown frame, means to clamp the sevsaid frame, a pouring guide and tamping eral members together, a removable core for device comprising an open frame fitting said frame, and a pouring guide and tampwithin the mold section having an outing device comprising an open frame fitting wardly flaring upper rim section and a within the mold section and having an outrim surrounding its lower edge. 15 wardly flaring upper rim section. In testimony whereof I affix my signature.

6. A mold for hollow tiles comprising a knock-down frame, means to clamp the sev- JOHN WALKER. 

